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/*
Exercise 1-13. Write a program to print a histogram of the lengths of words in
its input. It is easy to draw the histogram with the bars horizontal; a
vertical orientation is more challenging.
===
*/
#include <stdio.h>
#define BUF 50 /* max word length */
int main () {
int c, l, i, m, lngst; /* character, length, index, most, longest */
int count[BUF]; /* length count */
/* initialise to zero */
for (i=0; i<BUF; i++) count[i]=0;
lngst=m=l=0;
while ((c=getchar())!=EOF) {
if (c==' ' || c=='\t' || c=='\n') { /* space */
if (l) { /* if word just ended */
if (l>lngst) lngst=l; /* update longest */
count[l-1]++; /* add length to count */
if (count[l-1]>m) m=count[l-1]; /* update most */
l=0; /* reset length count */
}
} else l++; /* count word length */
}
while (m--) { /* for each line */
for (i=0; i<=lngst-1; i++) { /* for each count */
if (count[i]>=m+1) printf(" | ");
else printf(" ");
} putchar('\n');
}
for (i=1; i<=lngst; i++) /* labels */
printf("%2.d ", i);
putchar('\n');
}
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